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Finding the Fourth Proportional to 15,893.54, 21,932.94 and 8,820.02

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Solution

The fourth proportional to 15,893.54, 21,932.94 and 8,820.02 is: 12,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,893.54 : 21,932.94 = 8,820.02 : x
  2. Step 2: Convert to fraction form
    15,893.54/21,932.94 = 8,820.02/x
  3. Step 3: Cross multiply
    15,893.54x = 21,932.94 × 8,820.02
  4. Step 4: Simplify right side
    15,893.54x = 193,448,969.46
  5. Step 5: Solve for x
    x = 193,448,969.46/15,893.54
  6. Step 6: Final answer
    x = 12,171.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.